It's pointless comparing prices across regions people further North don't have the same desposable income as those from down South.I'd say prices are up 10% in my region in the last 2 years but the worst change is the proliferation of new girls wanting £180 ph.I set my cost cap and go without if nobody fits it I'm not paying over the odds.
A Rom I saw a couple of months back has gone from £70/half hour to £90/half hour